Rotary casting



D. S. DE LAVAUD.

ROTARY CASTING. APPLICATION FILED Aue.27. 1920.

Patented May 10 1921.

INVENTORQ A TTORN E YS UNITED STATES mmr'rm SENSAUD DE IiAVAUD, or unit YORK, N. Y.

ROTARY CASTING.

Specification of Letters Patent.

Application filed. August 27, 1920. Serial No. 406,440.

To all whom. it may concern Be it known that I DIMITRI SENSAUD DE LAVAUD, a citizen oi the United States of Brazil, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Rotary Castings, of which the following is a specification.

' This invention relates to rotary casting, and -more particularly aims to provide an improved type of distributer for sup-ply ing the molten metal to the rotary mold.

he invention provides a distributer lin-- ing for the hollow part of the distributer within which the metal is temporarily confined preparatory to casting an annular object, as a pipe, or through which the molten metal steadily flows during the casting of such a pipe. The tilting trough, as an example of the former type of distributer, is

well knownin the art; and an example of the latter type of distributer is a spout such as disclosed in United States Letters Patent No. 1,329,295 issued to the undersigned.

The lining of the new invention includes a plurality of substantially U-shaped lining members arranged end to end in a substantially straight line along a length of the distributer, thereby to provide a chamber for holdingmolten metal, located within and over the line of members, in combination with means for yieldingly maintaining such members in end-to-end contact. Such chamber, in the case of a trough distributer, is a pocket, and such chamber,

in the case of a spout distributer, is a channel or gutter leading to the discharge end of the spout, or rather, to what may be cal-led the spout proper. The material of which the members are constructed, in the case of the trough type of distributer, is preferably of some clay-like, graphitic or other suitable refractorymaterial to which the molten iron will not readily freeze;

but in the case of a spout distributer, practice has proved that the members may safely be made of cast iron or other suitable metal,

'due to the fact that in casting according to the spout method the metal is never quies-' cent but always flowing through the distributer, and so .the' tendency of prematurely cooled parts of the metal to adhere to any particular pointinside the dist'rib- Zuter is minimized if not wholly defeated.

The new lining is made up of such plurality of yieldingly held members as described, in order that when the lining becomes in ured or worn, the entire lining need not be replaced, but, instead, a par ticularly broken or injured member may be removed and a new one substituted, and in order, further, and this is probably the most important advantage, that heat expansions of the lining may take place without causing a bending or arching of the entire dis- 'tributer along it length.

The prime object of the invention is to provide a construction for attaining the ends just indicated.

Among its lesser objects, the invention also involves the provision of an illustrated embodiment constituting a compact, readily accessible, preferably adjustable means for yieldingly holding the lining members in line as described. Preferably said means is housed in a part of the casting apparatus not calculated to interfere with the small slze, slmplicity, low cost of construction, and ease ofopegation otherwise characteristic of such a'casting apparatus, especially when said means is utilized in a spout type of distributer. In the latter case, described in detail hereinbelow, said means preferably is located at one 'side ofv the foot of the now-familiar supply chute, and a ter-. minal lining member is located at the other Side of the foot of the chute with such spouti distributer of the type wherein the part of the distributer surrounding the lining is, as is at present preferable, constructed of a tubular, generally cylindrical outer metal casing which interiorly carries, beyond the outer surfaces of the lining members, a plurality of the water-cooling compartments one of which is preferably a waterfeeding pipe extending under the line of lining members. v

That the various objects abo "e enumerated are attained will be seen from the accompanying drawing disclosing a preferred embodiment of the invention, illustratively Patented May 10, 1921.

Figure 1 is a side elevation, partially broken away and partially in section, showing a spoutdistributer, its chute for supplying the molten metalto the supply end of the distributer, and a tilting reservoir present. invent1on;

45 14 as shown in center bottom water-compartment consti-- or ladle for delivering the predetermined charge of molten metal gradually and \lIll formlyto the upper endof the chute;

Fig. 2 is a vertical axial section through such distributer, and through the lower end of the chute, showing the plurality of lining members and a yieldable, in the-present case resilient, lining-maintainer, pursuant to the Fig. 3 is a transverse line 3 -3 of F ig. 2, with the lower part of the chute omittedand with one of the lining members indicated in dot-and-dash;

Fig. 4 is a transverse section taken on line 1 4-4" of Fig. 2, With another one of thelining members indicated in dot-and' dash;

Fig; 5 is an end elevation of one type of lining member used in part to make up the line of such members in the distributer- 2 this being the type of member indicated in Fig. 3;

Fig. 6is an end elevation of the other type of lining member used also in,,mak1n'g upsaid line of such members-this being the type of member indicated in Fig. 4; and

Fig. 7 is a transverse section taken on line 77 of Fig. 2. I Similar reference characters refer to similar partsthroughout the several .views of the drawing. I p

The distributer, marked 8 in Fig. 1, n-

cludes, as shown best in Figs. 2, 3, 4 and 7, a tubularouter metal casing 9, slotted. at the top for a part of its length as indicated, and

carrying at its discharge end a spout piece 19. V

(This casing has side partitions 10, establishing water-cooling compartments as indicated at 11 in Figs. 3,4 and 7 ,the continuously=circulating water in these compartments discharging through suitable outlets as indicated at 12 in Fig. 2, such water being continuousl admitted to these compartments through the ducts 14* in a block igs. 4 and 2, from a third tuted by a pipe 15' having a water inlet at I 16'; these parts being provided preferably to water-cool the trough, and hence help in preventing heat distortions thereof, pursuant to some of the principles disclosed in United States Letters Patent No. 1,323,253 issued to the undersigned.)

The lining members, placedend to end within the slotted'part of casing 9, are of two different kinds, as to their bottom conformations, as indicated at 17 and 18 in Figs.-2 to 6; that is to say, a single one of such members 18' is used to overlie the block 6Q 14, a single one of the members .17 is used to the right of the member 18 in Fig. 2, and the remainder of the line of members, to the left ofsaid member 18, is made up of meniber's 17. .In the case of these last mentioned members '17, the undercut slots with section taken on which they are formed at the bottom, as indicated most clearly in the case of the member 17 shown in Fig. 5, such slot beingthere given the reference numeral 17, are provided for straddling the pipe 15.

These lining members 17 and 18, being preferably of cast iron. as aforesaid, may

depend merely on gravity, to hold them in line within the bottom of casing 9; although,

said United States Letters Patent No. 1,329;

295. According to that patent, however,

the chute is disclosed as being rigidly anchored at its upper end} Whereas here, in order to permit a slightbaokward' an forward movement of the foot of the chute against the line of lining members 17 and 18, the chute is swinginglymounted at its up er end as indicated at 23 in Fig. 1.

he purpose of this swing-mounting of the chute is to permit the means-for yleldingly holding the lining members in end-toend contact, which meafisis constituted by an expansile coil spring 24 (Fig. '2), to exert its yielding pressure agamst the line of members 17 and 18, not only througha sliding sprin follower 25 (Flgs. 1, 2 and 7), but also-t rou h a boss 21 (Figs. 1 and 2) formed on the eel of the swingingly mounted chute 21. I

As a result of this construction, a very compact, simple, reliable and accessible construction is provided, with the spring 24 and the follower 25 both arranged in line with the lining members 17 vand 18 and in the rear of the foot of chute 21; such parts i 24 and 25 being housed in a rear unslotted extension of the metal casing 9 of the distributer.

In order to permit the spring 24 to be set to any desired'expansile adjustment, a cylindrical thrust-block 26 is alsohoused 1n the 'rearextension of the casing 9, as shown in Fi .2, directly in back of the spring, and t is block may be moved'to the right or allowed to move to the left pursuant to the spiral adjustment of a hand-wheel 27 having its shaft threaded into a cap 28 mounted on the rear end of casing 9.

Operation. Before .or durin terior of a rotary mold, while carrying out the employment of they distributer for delivering metal to the in-.

one or more casting operations, handwheel 27 is turned to compress spripg 24, to cause such spring, acting through 1ts follower and the boss 21 at the heel of the swingingly mounted supplyv chute, to holdthe: liningmembers 17 and 18 in close end-to-endlcontact. By thus operating the hand-wheel, the' spring is given precisely the compression to insure that lining members 17 and 18 will be pressed closely together, to form a'smooth,

ong'itudinally of the distributer, to allow;

for heat expansions.

I claim: 1. In a molten metal distributer for r0 tary molds, the combination of a multi-part -shaped mem ers arranged end to e'fid in a substantially lining for the distributer including a rality of substantially I strai ht line along alength of the distribu ter, t ereby to provide a chamber for holdingthe molten metal and located within and over the line of members, and means for resiliently holding such members in end-to- I y York and State of New York this th day end contact.

2, In a molten metal distributer. for 'rotary molds, the combination of amulti-pait lining for tli'e distributer, including a 31a rality of-substantially-U-shaped members ar- Y ranged end to end in a substantially straigh line along a lengthof the distributor, there by to provide a chamber for holding the molten metaland located within and overthe line .of members, and means for acting on one of the members, at one end of-the line of members to hold the members yieldingly' in end-to-endcontact.

' 3. The i distributer 3 defined .in' claim 2,

wherein said means includes an ex ansilecoil spring, there also beingprovi edan j adjustable member for controlling the ten-.

sion of said spring.

4. The distrlbuter spring a-nd-a movable block interposed. between the spring and the last mentioned linin member and contactin the latter.

5. %he distributerr define in claim 4, wherein a chute is provided for. deliverin molten metal .to the distribut'er and sai 9 block is carried; by said chute, the chute being swinging y' mounted to permit the block to have s ight movement.

' Signed at New Yorkin the county of New of Jul, A D. 1920. a

1) rar YS'ENSAUD be LAVAUD.

' -defined in 'claim 2, "wherein. said. means mcludes an expansi-le 

